It would be less of a problem if there was a way to "delete" or turn off flattens. It would require a change in the data format though so that flattens could be associated to airports.Thomas[a href=http://www.flyingscool.com/FC_StartJava.html] http://www.flyingscool.com/images/Signature.jpg [/a]I like using VC's :-)

The FAA/Airnav data is most often the incorrect data when it comes to airports. SRTM data has its errors, but airports are typically in relatively flat, unobstructed areas that SRTM data has fewer problems with. The FAA (and therefore AirNav) depend on the airport operators to provide the altitude and location data for smaller airports, and quite often those data submissions are fairly inaccurate. A quick pass through NASA Worldwind or Google Earth will confirm this. For instance, 8B1 Hawthorne-Feather is cut into the side of a hill in FS because its location is off by quite a distance. But FS's data matches that of AirNav.Thomas[a href=http://www.flyingscool.com/FC_StartJava.html] http://www.flyingscool.com/images/Signature.jpg [/a]I like using VC's :-)